I’ve read so many people saying that a 9V power supply for guitar pedals means they can’t give you enough headroom, and the same for the 500-series 32V (±16V) supply. But surely there’s a way designers can ‘step up’ the voltage inside a device?

I’ve got to the point at mixdown where I’d usually be thinking about sending everything through a couple of global reverbs/delays with a view to simulating a soundstage. Would this have actually been possible for a mix engineer in that decade?